Musical instrument



FIG. 1 is a perspective view of the musical instrument embodying the design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof.

The broken lines represent environmental structure and form no part of the claimed design. 

CLAIM We claim the ornamental design for a musical instrument, as shown and described. 